Shannen Doherty has shared the heartbreaking news that her cancer might have spread, revealing it has made its way to her lymph nodes.

In an interview with Entertainment Tonight, the Charmed star explained: "I had breast cancer that spread to the lymph nodes, and from one of my surgeries we discovered that some of the cancer cells might have actually gone out of the lymph nodes.

"So for that reason, we are doing chemo, and then after chemo, I'll do radiation."

A post shared by ShannenDoherty (@theshando) on Jul 25, 2016 at 10:26am PDT

"The unknown is always the scariest part," she told EW. "Is the chemo going to work? Is the radiation going to work? You know, am I going to have to go through this again, or am I going to get secondary cancer? Everything else is manageable.

"Pain is manageable, you know, living without a breast is manageable. It's the worry of your future and how your future is going to affect the people that you love."